Innersole



B. D. LEVI NE Oct. 19, 1943.

INNERSOLE Filed Aug. 2, 1941 i/'amz Levine.

L w f lrey tribut'ion throughout the sheet.

Patented Cet. 19,y 1943 v UNITED STATES PATENT OFFICE'` j INNERSOLE Benjamin D. Levine, Newton, Mass. e

Application August 2, 1941, Serial No. 405,227

(c1. .e6-44) l may be substantially moisture-proof, I prefer to Claims.

The present invention relates to an innersole for shoes, slippers, or the like and may be used either as a permanent innersole in a shoe or as one which may be inserted and removed at will.

The present invention has a number of advantages over innersoles now used` by virtue of its construction, composition, and method of manufacture. In the present invention the innersole is covered on the top and bottom or at least on the top side but preferably on' both sides, which provides further merit, by a fabric cover Which` may be of imitation leather cloth, canvas or other similar or equivalent materials. Between the outer covers there is provided a porous asbestos sheet constructed of bre asbestos which is treated or sprayed With liquid rubber compound or rubber cement to impregnate and iill the pores and thereby give a yielding quality to the innerso-le. The covers are similarly sprayed after which the elements are dried and then cemented or adhered together in any suitable manner.

The present invention will be more fully described in connection with the drawing illustrating an embodiment of the same in Which the innersole is shown in a centralsection. n

In the drawing, I is the asbestos sheet of such size and shape to nt inside a shoe. The material preferable is asbestos of the fibrous type provided with pores having a general uniformity and dis- 'I'his sheet is sprayed or coated With liquid rubber or compound, having a drier in it or With rubber cement.

The sheet is then dried for the necessary time, which may be about twenty minutes, after which the process is again repeated a number of times until the sheet is thoroughly Vimpregnated and coated. The top and bottom sheets 2 and 3 which are thin compared to the asbestos sheet are also similarly coated a number of times on the sides facing the asbestos sheets. These sheets are preferably imitation leather such as leatherized fabrics that is fabric having a leather nish or some such similar material. The three elements are then pressed or cemented together and form the innersole. A binding tape 4 may be used around the edge and this, if desired may hold the covers 2 and 3 in place.

In the present invention, the rubber impregnation of the asbestos Which penetrates Aconsiderably into the material provides its yielding qualities and the spring to the innersole while the The spraying and use a kind in which the fiber is loosely enough Woven so that some moisture may be permitted to pass through it. -This prevents the drawing feeling so often complained'of in rubber shoes.

Various modifications in 'the use of materialsv and construction may be employed Without departing from the spirit of the invention which I claim:

l. An innersole comprising a sheet of-asbestos impregnated and coated with rubber and covered,

, at least on oneside, with a fabric material thin in comparison with the asbestos sheet, said rubber. coating and fabric being permeable to permit moisture to be absorbed bylsaid asbestos sheet.

2. An innersole of the type describedcomprising a sheet of asbestos impregnated and coated with rubber and a covering of lfabric material thin in comparison with the asbestos sheet covering at least one side of said asbestos sheetrsaid fabric material also being @oatedwith rubberen the side facing'the asbestos, said rubber` coatingl and fabric being permeable to permit moisture to' be absorbed by said asbestos sheet.

3. An innersole of the type described comprisi `.ing an asbestos sheet impregnated and coated with rubber and covering sheets of fabric material thin incomparison With the asbestos sheet covering both sides of said'asbestos sheetand means adhering said covering sheets to said asp bestos sheet, said rubber coating andfabric. be-

ing permeable to permit moisture to be absorbed with rubber and covering sheets of fabric matericomplished With an asbestos'iibre sheetas the surface is not smooth andspraying does not sealA the whole surface structure. The cross section shows the open interstices in which the asbestos can gather moisture. While imitation leather al thin in comparison withV the asbestossheet covering both sides of said asbestos sheet and a bind.

er positioned around the edge of the side Wall hOIding'said sheets together, said rubber coat- 5. vAn innersole of the type described comprisingran asbestos sheet of porous fibre character I impregnated with a rubber compound and a cover l member thin in comparison With the asbestos sheet positioned at least on one side of said asbestos sheet and means adhering the cover mem- `ber to said asbestossheet, said rubber coating and fabric being permeable .to permit moisture to cover. andthe top of the asbestos sheet. l Y 

